Question

questões a seguir, por favor

Answer 1

Letra A
$Q'=m*c'*( \beta f'- \beta o')$
$10000-0=200*c'*(80-20)$
$10000=200*c'*60$
$10000=12000*c'$
$10=12*c'$
$\boxed{c'=\frac{10}{12}}$
$\boxed{c'=\frac{5}{6}}$
$\boxed{\boxed{Resposta-A:c'=0,83cal/gC}}$

Letra B
$Q''=m*c''*( \beta f''- \beta o'')$
$40000-30000=200*c''*(100-80)$
$10000=200*c''*20$
$10000=4000*c''$
$10=4*c''$
$\boxed{c''=\frac{10}{4}}$
$\boxed{\boxed{Resposta-B:c''=2,5cal/gC}}$

Letra C
$Q'''=m*Lf$
$30000-10000=200*Lf$
$20000=200*Lf$
$200=2*Lf$
$\boxed{Lf=\frac{200}{2}}$
$\boxed{\boxed{Resposta-C:Lf=100cal/g}}$

Letra D
$Q'=C*( \beta f'- \beta o')$
$10000=C*(80-20)$
$10000=C*60$
$1000=C*6$
$\boxed{C=\frac{1000}{6}}$
$\boxed{\boxed{Resposta-D:C=166,67cal/C}}$